libflashrom: Return progress state to the library user

Projects using libflashrom like fwupd expect the user to wait for the
operation to complete. To avoid the user thinking the process has
"hung" or "got stuck" report back the progress complete of the erase,
write and read operations.

Add a new --progress flag to the CLI to report progress of operations.

Include a test for the dummy spi25 device.

TEST=./test_build.sh; ./flashrom -p lspcon_i2c_spi:bus=7 -r /dev/null --progress

Change-Id: I7197572bb7f19e3bdb2bde855d70a0f50fd3854c
Signed-off-by: Richard Hughes <richard@hughsie.com>
Signed-off-by: Daniel Campello <campello@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/49643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Thomas Heijligen <src@posteo.de>

1 files changed, 19 insertions, 0 deletions

diff --git a/libflashrom.c b/libflashrom.c
index e70c1d1a..0c6613e9 100644
--- a/libflashrom.c
+++ b/libflashrom.c
@@ -65,6 +65,25 @@ int print(const enum flashrom_log_level level, const char *const fmt, ...)
 	return 0;
 }
 
+void flashrom_set_progress_callback(struct flashrom_flashctx *flashctx, flashrom_progress_callback *progress_callback, struct flashrom_progress *progress_state)
+{
+	flashctx->progress_callback = progress_callback;
+	flashctx->progress_state = progress_state;
+}
+/** @private */
+void update_progress(struct flashrom_flashctx *flashctx, enum flashrom_progress_stage stage, size_t current, size_t total)
+{
+	if (flashctx->progress_callback == NULL)
+		return;
+	if (current > total)
+		current = total;
+
+	flashctx->progress_state->stage = stage;
+	flashctx->progress_state->current = current;
+	flashctx->progress_state->total = total;
+	flashctx->progress_callback(flashctx);
+}
+
 const char *flashrom_version_info(void)
 {
 	return flashrom_version;